Aerial Surveillance with Low-Altitude Long-Endurance Tethered Multirotor UAVs Using Photovoltaic Power Management System

Jung, Sunghun; Jo, Yonghyeon; Kim, Young-Joon

doi:10.3390/en12071323

Cited by 22 publications

(15 citation statements)

References 9 publications

(9 reference statements)

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“…• Accurately defining the density of UAVs to be deployed while considering their energy consumption and other maintenance costs [170]. • Avoiding the excessive consumption of energy by UAVs.…”

Section: Uav Monitoringmentioning

confidence: 99%

UAV assistance paradigm: State-of-the-art in applications and challenges

Alzahrani

Oubbati

Barnawi

et al. 2020

Journal of Network and Computer Applications

326

128

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Unmanned Aerial Vehicles (UAVs) are an emerging technology with the potential to be used in industries and various sectors of human life to provide a wide range of applications and services. During the last decade, there has been a growing focus of research in the UAV's assistance paradigm as a fundamental concept resulting in the constant improvement between different kinds of ground networks and the hovering UAVs in the sky. Recently, the wide availability of embedded wireless interfaces in the communicating entities has allowed the deployment of such a paradigm simpler and easiest. Moreover, due to UAVs' controlled mobility and adjustable altitudes, they can be considered as the most appropriate candidate to enhance the performance and overcome the restrictions of ground networks. This comprehensive survey both studies and summarizes the existing UAV-assisted research, such as routing, data gathering, cellular communications, Internet of Things (IoT) networks, and disaster management that supports existing enabling technologies. Descriptions, classifications, and comparative studies related to different UAV-assisted proposals are presented throughout the paper. By pointing out numerous future challenges, it is expected to simulate research in this emerging and hot research area. To the best of our knowledge, there are many survey papers on the topic from a technology perspective. Nevertheless, this survey can be considered as the first attempt at a comprehensive analysis of different types of existing UAV-assisted networks and describes the state-of-the-art in UAV-assisted research.

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Section: Uav Monitoringmentioning

confidence: 99%

UAV assistance paradigm: State-of-the-art in applications and challenges

Alzahrani

Oubbati

Barnawi

et al. 2020

Journal of Network and Computer Applications

326

128

View full text Add to dashboard Cite

show abstract

“…[31]. There are various UAVs which have been developed and tested with the purpose of surveillance and remote sensing for very high altitude [32][33][34][35]. Regarding the development of propeller for high altitude SAR UAVs, Korea Aerospace Research Institute have built the propeller with a diameter of 0.61 m to fly at 10 km ASL altitude with propeller efficiency of 68% (at 3,120 RPM) [36].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Propeller for High-Altitude Search and Rescue Unmanned Aerial Vehicle

Dahal

Dura

Poudel

2021

International Journal of Aerospace Engineering

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The commercially available unmanned aerial vehicles are not good enough for search and rescue flight at high altitudes. This is because as the altitude increases, the density of air decreases which affects the thrust generation of the UAV. The objective of this research work is to design thrust optimized blade for an altitude range of 3,000–5,000 m with a density of air 0.7364 kg/m3, respectively, and perform thrust analysis. The property of aluminum alloy 1,060 being lightweight is chosen for designing and testing of blade. The blade element theory-based design and analysis code was developed, and user-friendly aerodynamic inputs were used to obtain the desired outputs. The geometry designed for an altitude range of 3,000-5,000 m faced the total stress of 6.0 MPa which was at 70% of the blade span. This stress is within the limit of yield strength of the aluminum alloy, 28 MPa. The modal analysis shows the first natural frequency occurs at around 12,000 RPM which is safe for operating the blade at 0-5,000 RPM. Experimental analysis of the blade gave a thrust of 0.92 N at 2,697 RPM at 1,400 m. The analytical solution for thrust with the same conditions was 1.7 N with 85.6% efficiency. The validation of experimental results has been done by the CFD analysis. The CFD analysis was performed in ANSYS CFX which gave a thrust value of 2.27 N for the same boundary conditions. Thus, the blade designed for high altitude SAR UAV is structurally safe to operate in 0-5,000 RPM range, and its use in search missions could save many lives in the Himalayas.

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Section: Introductionmentioning

confidence: 99%

“…Powering UAVs by solar energy is a promising solution to overcome the bottleneck of the limited flight time of UAVs powered by onboard battery. Harvesting solar energy while flying allows UAVs to fly longer in the sky, which enables the UAVs to provide uninterrupted service in different applications such as monitoring and surveillance [3,4], disaster management [5], infrastructure inspection [6,7], parcel delivery [8] and wireless communications [9].The application of UAVs in wireless communications is a hot topic. Compared to conventional wireless communication systems based on stationary infrastructures, UAV-based communication systems can provide timely and economical services in temporary hotspots, disaster areas, and complex terrains [9,10], thanks to their maneuverability.…”

mentioning

confidence: 99%

Energy-Efficient 3D Navigation of a Solar-Powered UAV for Secure Communication in the Presence of Eavesdroppers and No-Fly Zones

Huang

Savkin

2020

Energies

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Unmanned Aerial Vehicles (UAVs) have been regarded as a promising means to reshape future wireless communication systems. In this paper, we consider how to plan the trajectory of a solar-powered UAV under a cloudy condition to secure the communication between the UAV and a target ground node against multiple eavesdroppers. We propose a new 3D UAV trajectory optimization model by taking into account the UAV energy consumption, solar power harvesting, eavesdropping and no-fly zone avoidance. A Rapidly-exploring Random Tree (RRT) method is developed to construct the UAV trajectory. Computer simulations and comparisons with a baseline method demonstrate that the proposed method is able to produce trajectories to ensure the valid wireless communication link with the ground node and prevent eavesdropping.

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Aerial Surveillance with Low-Altitude Long-Endurance Tethered Multirotor UAVs Using Photovoltaic Power Management System

Cited by 22 publications

References 9 publications

UAV assistance paradigm: State-of-the-art in applications and challenges

UAV assistance paradigm: State-of-the-art in applications and challenges

Design and Analysis of Propeller for High-Altitude Search and Rescue Unmanned Aerial Vehicle

Energy-Efficient 3D Navigation of a Solar-Powered UAV for Secure Communication in the Presence of Eavesdroppers and No-Fly Zones

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